PURPOSE: To improve the crime preventing function by providing plural trespass detection inhibition time clocking means and trespass indication delay time clocking means corresponding to respective trespass sensors and setting their times separately according to the installation places of the respective trespass sensors.
CONSTITUTION: The trespass detection inhibition time clocking means 15 and trespass indication delay time clocking means 16 are provided corresponding to the respective trespass sensor 10. The trespass detection inhibition times and trespass indication delay times are set and clocked individually according to the installation places of the trespass sensors 10, so set times of tens of seconds - several minutes are set for a trespass sensor 10 which is installed, for example, on a front door to eliminate the unnecessary operation of a warning means 12 when a person goes out and returns; and the set times are set to zero for trespass sensors 10 installed on the windows of respective rooms to operates the warning means 12 immediately in case of a trespass by one crime prevention device. Consequently, the crime prevention device having the superior crime preventing function is obtained.
NAKAMURA SHINICHI
FUJIMURA YASUO
HATA KEIKO
| JPS5987594A | 1984-05-21 | |||
| JPS63238695A | 1988-10-04 | |||
| JP60070461B |
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